class Device {
	String model
	Integer id
	String manufactor
	
	public String getModel(){
		return model
	}
	public void setModel(String newModel){
		this.model = newModel
	}
	public Integer getId(){
		return id
	}
	public void setId(Integer newId){
		this.id = newId
	}
	public String getManufactor(){
		return manufactor
	}
	public void setManufactor(String newManufactor){
		this.manufactor = newManufactor
	}	
	public boolean myValidate(){
		if (this.model == "") return false
		if (this.model == null) return false
		if (this.manufactor == "") return false
		if (this.manufactor == null) return false
		return true
	}
}